9.x and later, CUBE, Cisco Voice Gateways IOS version 15.x and later, SIP Proxy 8x and later, VXML Gateways IOS version 15.x and later • System Integration: Nokia or Mavenir or Siemens IMS, SIP, Cisco CUBE SBC or other SBCs such as Acme or Audiocodes • Load Balancer: NetScaler, F5 or other load